The ruined siege castles outside Absalom have long beckoned adventurers looking to make a name for themselves. Now an earthquake has cracked open one of these fabled ruins, and its lost mysteries and fantastic treasures lie exposed for the first time in centuries. But the tower's empty halls once more echo with living footfalls, and a new master has claimed the Fallen Fortress as his own. Can the PCs find a way to get inside its shattered walls? What ancient dangers and fresh threats will they encounter inside its crumbling chambers? And will the PCs be able to defeat the current Master of the Fallen Fortress?